Children who are promised a payoff for playing with an interesting toy have later been observed to play with the toy less than those who are not promised the reward. this provides enhancement for the role of in operant behavior.

Experiment to investigate effect of medication on levels of stress in males and females. dependant variable?

Use statistics below to create a graph titled businesses in the united states, 1997-2003. use information from your graph and from figure 3.1 on page 71 to write a generalization about businesses in america free enterprise system.

Acharacterized by intimate, long-term, face-to-face association and cooperation. primary group community clique secondary group